1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MAXImum [283]
4 years ago
15

A rotating beacon is located 15 ft from a wall. If the distance from the beacon to the point on the wall where the beacon is aim

ed is given by a = 15|sec (2πt)| , where t is in seconds, find a when t = 0.37 seconds. Round your answer to the nearest hundredth.
Physics
1 answer:
gulaghasi [49]4 years ago
3 0
15∗Abs[Sec[2π37/100]]= 21.91 ft
You might be interested in
The Sun is a type G2 star. Type G stars (from G0 to G9) have a range of temperatures from 5200 to 5900. What is the range of log
otez555 [7]

Answer:

Explanation:

I’ll help

8 0
3 years ago
Convert the normal temperature of human body from Celcius to Kelvin<br> and Fahrenheit scale.
Kay [80]

Answer:

the normal human body temperature in Celcius is 37°C, in Fahrenheit is 98.6°F, in Kelvin is 310°K

7 0
3 years ago
A car is 2.0 km west of a traffic light at t = 0 and 5.0 km east of the light at t = 6.0 min. Assume the origin of the coordinat
egoroff_w [7]

Answer:

(a) Position Vectors V₁= -2î km, V₂=5î km

(b) Displacement Δx=7 km

Explanation:

Given data

Distance=2 km west at t=0

Distance=5 km east at t=6 min

Positive x is the east direction

To find

(a)Car position vector at given times

(b)Displacement between 0 to 6.0 min

Solution

For Part (a) car position vector at given times

At t=0 the distance=2 km west so conclude that x₁=-2 because it is in negative side So vector V₁

V₁= -2î km

At t=6.0 the distance=5 km east so conclude that x₂=5 because it is in positive side So vector V₂

V₂=5î km

For (b) displacement between 0 to 6.0 min

According to following mathematical law we can conclude that

Δx=x₂-x₁

Δx=5-(-2)km

Δx=7 km

6 0
3 years ago
A father racing his son has half the kinetic energy of the son, who has half the mass of the father.The father speeds up by 1.0
Helga [31]

Answer:

(a) v_f=2.414\ m.s^{-1}

(b) v_s=4.828\ m.s^{-1}

Explanation:

Let:

mass of father be, m_f

mass of son be, m_s=\frac{m_f}{2}

speed of son be, v_s

initial speed of father be, v_f

After speeding up, speed of father is  v_f+1

<u>We know Kinetic Energy is given as</u>

KE=\frac{1}{2} m.v^2 .....................................(1)

where:

m = mass

v = velocity

Hence, according to the initial condition the father is having kinetic energy half the kinetic energy of the son.

KE_s=2.KE_f

\frac{1}{2} m_s.v_s^2=2\times \frac{1}{2} m_f.v_f^2

(\frac{m_f}{2})\times v_s^2=2\times m_f\times v_f^2

v_s=2v_f .................................................(2)

According to the final condition:

\frac{1}{2} m_s.v_s^2= \frac{1}{2} m_f.(v_f+1)^2

(\frac{m_f}{2})\times v_s^2=m_f.(v_f+1)^2

v_s^2=2(v_f+1)^2

v_s=\sqrt{2}(v_f+1).....................................................(3)

(a)

From eq. 2 & 3

2v_f=\sqrt{2}(v_f+1)

\sqrt{2}\ v_f=(v_f+1)

v_f(\sqrt{2}-1)=1

v_f=\frac{1}{(\sqrt{2}-1)}

v_f=2.414\ m.s^{-1}

(b)

<em>putting the above value in eq. (2)</em>

v_s=4.828\ m.s^{-1}

4 0
4 years ago
Extrusive Igneous rock has ___________ grain size.<br> I need help on this one
MrRissso [65]

Explanation:

Extrusive rocks may have a few grains that are large enough to see, but most of them will be too small to see individual minerals. ... The individual mineral grains are almost too small to see. Some extrusive rocks cool so quickly that they do not form any grains. Instead, they form a natural glass.

8 0
3 years ago
Other questions:
  • Dimas reads that it takes 270 n to lift a firefighter’s equipment. if a firefighter does 5400 j of work carrying the equipment u
    14·2 answers
  • What's the difference between anxiety and depression
    12·2 answers
  • A woman exerts a horizontal force of 5 pounds on a box as she pushes it up a ramp that is 6 feet long and inclined at an angle o
    12·1 answer
  • If the speed of an object were to triple, what would be the increase of kinetic energy?
    10·1 answer
  • A ball with an initial velocity of 8.00 m/s rolls up a hill without slipping. treating the ball as a spherical shell, calculate
    5·2 answers
  • What is the speed of light ?​
    14·1 answer
  • A car of mass 1500 kg starting from rest can reach a speed of 20
    11·1 answer
  • What does a ox spirt animal mean 23 POINTS!!!
    6·2 answers
  • Because sound waves vibrate longitudinally, what can result?
    13·1 answer
  • Find the minor measurement of the vernier scale by taking 49, 1mm divisions of the main scale and dividing it into 50 vernier di
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!